Keep your employees informed with Labelmaster's Danger Asbestos May Cause Cancer, Damage Lungs Vertical Signs. Measuring 20 x 14 in. and made of Dura-Plastic™, these offer high impact resistance and durability for outdoor applications and harsh environments. The printed surface is protected by 2-mil, high-gloss, polyester overlaminate, and the signs feature 3/16-in. mounting holes and rounded corners and have an outdoor life of seven years. Using signage, especially safety signs, helps you stay in compliance with OSHA standards.